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Biomedical subjects

H Ducou Le Pointe

Publications and source records attributed to H Ducou Le Pointe.

15 recordsLinked to original sources

[Standard chest x-ray: from film to all digital!].

Conventional imaging will be totally replaced by digital imaging because of the lower exposure dosage and the clear advantages in terms of image processing, transfer and storage. Reports in the literature have demonstrated that a 2.5 pl/mm spatial resolution is satisfactory to detect a pneumothorax, a parenchymal nodule or a mediastinal mass. For most authors, this resolution is also sufficient to detect an interstitial syndrome. Digitalization by amplification or by particle detectors using wire chambers are not, for the time being, acceptable for interpretation of a simple chest image because of the low spatial resolution. The selenium cylinder is an adapted technology dedicated to chest imaging. Memory display screens can be used to digitalize the entire radiology unit. They are perfectly adapted for bedside imaging. Flat detectors are based on direct or indirect conversion of the X photons into an electrical signal during the clinical evaluation. The early results appear most promising.

Humans↗

A case of perforated cystic duplication of the transverse colon.

A 7-year-old girl presented with an abdominal cystic mass close to the pancreas. US and CT could not identify its origin. The diagnosis of duplication of the transverse colon was made at surgery. This location is rare. The differential diagnosis in this case included a pancreatic cystadenoma, a pseudocyst or a mesenteric cyst.

Child↗

Dynamic gadolinium-enhanced subtraction MR imaging--a simple technique for the early diagnosis of Legg-Calvé-Perthes disease: preliminary results.

PURPOSE: To determine whether the simple technique of dynamic gadolinium-enhanced subtraction MR imaging, which is available on standard MR units, can detect ischemia of the femoral head in children with early Legg-Calvé-Perthes disease (LCP). MATERIALS AND METHODS: Bone perfusion of eight hips in four patients (mean age 7.5 years) was studied using dynamic gadolinium-enhanced subtraction MR imaging at the onset of proven LCP (with initial negative plain films). Enhancement of subtracted images was compared with that on standard MR images and with bone scintigraphy findings. RESULTS: Subtraction MR imaging depicted ischemia as a widespread absence of enhancement and was in good agreement with bone scintigraphy. The subtraction technique improved the sensitivity and the specificity of MR imaging in two children. Furthermore, subtraction MR imaging allowed recognition of the pattern of early reperfusion. CONCLUSION: Our preliminary results indicate that dynamic gadolinium-enhanced subtraction MRI is a simple and promising means of early recognition of ischemia in LCP.

Child↗

[Post-traumatic hematoma of the duodenum. A case in a young child].

We report a case of traumatic duodenal hematoma. The patient's age (2.5 y.) and the absence of evidence of trauma when the symptoms began led to perform plain films of the abdomen, upper GI series, US, CT, and MR. This excess of imaging modalities emphasize the diagnostic value of plain X Rays of the abdomen and opacification of the duodenum.

Abdominal Injuries↗

[Teleradiology].

Teleradiology consists of the transmission of radiological images from one point to another. The use of a commercial telephone network allows easy and inexpensive transmission. Numerous applications are possible: management of patient transfers (for example the neurosurgery emergency service), distant interpretation of radiological images (telediagnosis), faster return of urgent examinations (direct transmission to examination monitors in medical or surgical emergency departments). Teleradiology raises technical problems: data entry (as not all radiological images are digitalised), quality and duration of transfer time, quality of display monitors; medicolegal problems: medical responsibility as well as storage (magnetic, magneto-optical or optical supports are not legally recognised at the present time). Although only in the early stages in France, teleradiology is being developed with relatively inexpensive equipment which can be described as an "image telephone".

Diagnostic Imaging↗